Lionel Messi scored a hat trick, two of which came from free kicks, to help Barcelona climb back atop La Liga with a 4-1 victory over Celta Vigo at the Camp Nou on Saturday.

His first of the night came from the penalty spot after Joseph Aidoo handled in the area -- the Argentine calmly sending Ruben Blanco the wrong way from 12 yards on 23 minutes.

Lucas Olaza equalised via free kick in the 42nd minute, but Messi topped his effort with one of his own four minutes later, leaving Blanco no chance with a sweet strike from 25 yards.

Messi outdid himself three minutes after half-time with another superlative spot kick, this time from a more central position as he again left Blanco well-beaten in the Celta goal.

Sergio Busquets added another in the 85th minute to complete the comprehensive win on the night.

The win gives Barca 25 points from 12 matches, while Celta remain in the relegation zone with nine points.